From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 23 Oct 2007 07:13:16 +0200 From: Heiko Carstens Subject: Re: [PATCH 02/10] [SG] Update block layer to use sg helpers Message-ID: <20071023051316.GB10055@osiris.boeblingen.de.ibm.com> References: <1193076664-13652-1-git-send-email-jens.axboe@oracle.com> <1193076664-13652-3-git-send-email-jens.axboe@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1193076664-13652-3-git-send-email-jens.axboe@oracle.com> Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: Jens Axboe Cc: torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, mingo@elte.hu, Martin Schwidefsky , linux-s390@vger.kernel.org List-ID: On Mon, Oct 22, 2007 at 08:10:56PM +0200, Jens Axboe wrote: > Signed-off-by: Jens Axboe > --- > block/ll_rw_blk.c | 8 ++++++-- > 1 files changed, 6 insertions(+), 2 deletions(-) > > diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c > index 8025d64..61c2e39 100644 > --- a/block/ll_rw_blk.c > +++ b/block/ll_rw_blk.c > @@ -1354,8 +1354,9 @@ new_segment: > else > sg = sg_next(sg); > > - memset(sg, 0, sizeof(*sg)); > - sg->page = bvec->bv_page; > + sg_dma_len(sg) = 0; > + sg_dma_address(sg) = 0; > + sg_set_page(sg, bvec->bv_page); > sg->length = nbytes; > sg->offset = bvec->bv_offset; > nsegs++; > @@ -1363,6 +1364,9 @@ new_segment: > bvprv = bvec; > } /* segments in rq */ > > + if (sg) > + __sg_mark_end(sg); > + > return nsegs; > } Hmm.... this breaks s390: CC block/ll_rw_blk.o block/ll_rw_blk.c: In function 'blk_rq_map_sg': block/ll_rw_blk.c:1357: error: implicit declaration of function 'sg_dma_len' block/ll_rw_blk.c:1357: error: lvalue required as left operand of assignment block/ll_rw_blk.c:1358: error: implicit declaration of function 'sg_dma_address' block/ll_rw_blk.c:1358: error: lvalue required as left operand of assignment make[1]: *** [block/ll_rw_blk.o] Error 1 Missing macros and no appropriate members in struct scatterlist since we don't have DMA. How to fix?